I'd appreciate your suggestions on what might be the cause of a
bothersome electrical problem we have on our 1994 Pathfinder.

When we drive, the "door open" dashboard light stays on, though
it sometimes goes out or flickers on/off when we go over a bump.

When we turn the motor off, the dashboard light goes off, but the
courtesy lights at the driver's and passenger's feet remain on.
Obviously I want to fix this, as it could drain my battery if those
lights stay on long enough.

The footwell lights are brightest when I open a door. When I
manually press in one of the five door switches, the footwell
lights dim a bit, but they remain on.

Do you know specifically where the door switch relay is located?
I found an electrical schematic, but it didn't show relays.

Help! Any suggestions are welcomed.